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An wide-band Low Noise Amplifier (LNA) is designed with differential output using IBM 90nm CMOS process. This LNA circuit has a centre frequency of 18.3 GHz. Gain of this designed circuit at the centre frequency is around 14 dB. It can be operated from around 14.2GHz to around 19.9 GHz with considerably high gain. -3 dB bandwidth of this LNA is around 5.8 GHz. Power consumption of this circuit is around 80-100 micro-watt. Supply voltage of this LNA circuit is 1.4V. This slight variations in the value of different parameters are found in different corner simulations of the circuit.